Very interesting. Thanks Mark!Mark Cooper said:In the 1920's and 30's a "Super-Ludwig" was similar to a 1960's-70's parallel snare mechanism. A "Super-Sensitive" had two sets of snare wires, with one being under the top head. The bottom snare system on a "Super-Sensitive" is the same as on a Super-Ludwig". Below is a Standard-Sensitive followed by a Super-Ludwig. The Standard-Sensitive is similar to a Super-Sensitive except it has a regular, non-adjustable bottom snare system. I don't have a photo of a Super-Sensitive, I'm afraid.What's the difference between a "Super Ludwig" and a "Super Sensitive"?